ORDER VII. CYCLOBRANCHI. 
GENERA. 
4. Pareuza. (1) Lin. 
Shell of a single piece ; 2 Pointed tentacula. Eyes at the outer 
a cord of small branchial base of the tentacula. 
leaves under the edges of 
the mantle; a thick, short 
trunk. Pl. 14, fig. 5, 6. 
2. Curron. (2) Lin. 
A range of testaceous, | A | membranous veil 
symmetrical scales along on the mouth instead of 
the back of the mantle. tentacula. 
(1) The mouth is fleshy, and contains a spiny tongue, lengthened posteriorly, 
and folded deeply within. 
(2) The shell of the Ghiton will be figured and described with the Multivalves. 
